Steam generating plant for the generation of high pressure steam



July- 28, 1931 W. PETERSEN ET AL STEAM GENERATING PLANT FOR THE GENERATION OF HIGH PRESSURE STEAM f'eheitov Filed A ril 26. 1929 2 Sheets-Sheet l Superh eater 3/ ,e/ e0 i .20 Jt Apparatus E/22 a 22 f -Superheat0r" 17 I8 i/ PPehQater' 19 Km C Feed Wdter Pump Invent ors;

Waldemar .Petersen,

Pi chard Trgen 5 4 Their Attorneg July 28, 1931.

w. PETERSEN EVTAL 6,793

STEAM GENERATING PLANT FOR THE GENERATION 01'' HIGH PRESSURE STE Filed April 26, 1929 2 Sheets-Sheet'2 Inventors.- Waldemar Petersen,

Richard Trger,

T heir Attofney Patented July 28, 1931 barren STATES PATENT OFFICE WALDEMAR PETERSEN, OF BERLIN, AND RICHARD, TRi GEB, OF BlERLIN-ZEHLENDORE,

GER-MANY, ASSIGN'QRS T GENERAL ELECTRIC CCMPANY', ACOHPOEATION OF NEW YORK 52555515110: GENERATING PLANT FOR THE GENIIRATZON OF HIGH. IPRESSURE STEAM Application filed April 26, 1329, Serial No. 358,319, and Germany May 10, 1928.

a generated by the pump must then'be so great that the pressure of the steam leaving the superheater is still sutlicient to force the hot steam back into the boiler. The employment of a return pump of this kind, however, represents a disadvantage inso far as it causes considerable unsaiety in the conduct of the working.

' The'present invention relates to a steam generating plant more particularly for the generation of high pressure steam in which, for the purpose of the vaporization, a part of the superheated steam generated in a superheater is mixed with the feed water in a jet apparatus, by which the water is vaporized, the increase of pressure produced by the mixing in the jet apparatus being utilized to effeet the circulation of the mixture through the superheater. An arrangement of this kind has the advantage, compared with that above mentioned, that the disadvantageous pump is avoided. The pressure increasing effect in the et apparatus can be controlled advantageously by regulating the pressure of the feed water.

In the drawings, Fig. 1 is a diagrammatic view of an arrangement embodying our 1nvention, and Figs. 2 and 3 are diagrammatic views of modifications.

O ur invention may be employed with advantage 1n combination with a vaporizing process wherein a boiler drum is utilized.

I Referringto the drawings, Fig. 1, 14 indicates a series of boiler drums which receive water froma feed water pump 15 through pipelines 16, '17 and 18, which are arranged in parallel and ineach ofwhich is a preheater .19, the water being heated in such preheaters 1318f6121lllYt0 the saturated steam temperature. Steam from the drums 1% is conveyed proits '{20 t1 q M l i super duit and Superheated steam of a pressure higher than that generated in boiler drums 14 is supplied to the et apparatus 21 by an auxiliary or special steam generating apparatus COHl-l prising a superheater 25 to which vapor is supplied through a conduit 26 by a jet apparatus 27. Vater, heated preferably to the saturatedstcam temperature, is supplied to the jet apparatus27 by a separate pump 28 and a preheater 29, pump 28 being shown as being in series with thefeed water pump 15. A part of the superheated steam generated in superheater 25 is fed through a conduit 30 to thejet apparatus 27, and the remainder of such superheated steam is fed to the jet apparatus21 by the conduits 31. With the arrangement shown it will be seen that the provision of pumps for pumping steam from the boiler drums 14; to the super-heaters 22 is avoided.

It will be readily understood that the superheated steam fed to the ct apparatus through conduit 31-mixes with the saturated steam fed through conduit 20 whereby the superheated steam causes an increase of pressure and thus forces the mixture of saturated and superheated steam through the superheater 22. The superheated steam supplied under pressure to the jet apparatus serves as the, pumping fluid for this apparatus and the saturated steam supplied by the boiler represents the fluid to be pumped.

Instead of using separate pumps 15 and 28 we may combine thesepumps into a single pump, the water being tapped off fromthe pumps'at separate stages to give the respective pressures required. Such an arrangement is indicated in F 2 wherein 32 indicates a single feed water pump which sup-; plies the boiler drums 14 corresponding m the b l 1114 of Fig. 1 through a conh supplies the pfelieeter a the remier as at Fig, 1.

through the conduit 34:. Numerals 19 indisuperheater, and a conduit for conveying catepreheaters corresponding to the preheatsuperheated vapor to the jet apparatus.

- ers 19 of Fig. 1. Otherwise the arrangement shown in Fig. 2 may be the same as that shown 5 in Fig. 1. g V

The auxiliary steam for theoperation of the jet apparatus 21 shown in Fig. 1 may be taken, if high pressure steam generating plant. Fig. 3 shows an embodiment of the invention which is similar to the arrangement shown in Fig. 1 except that for the generation of the auxiliary steam an apparatus is utilized comprising a boiler drum 35 from which steam desired, from any kind of known In witness whereof, we have hereunto set our hands,

is supplied by a pump 36 to a superheater' 37 a partof the steam from the superheater being returned by way of conduit 38 to boiler drum 35 for the purpose of generating steam therein while the remainder of the superheat' ed steam from superheater 37 is supplied by way of conduits 39 to a jet apparatus 40 corresponding to the jet apparatus 21 of Fig. 1. Otherwise the arrangement shown in Fig. 3 is similar to that shown in Fig. 1, and similar reference'characters, with the exponent b added, have been applied tothe corresponding parts. In the arrangement shown in Fig. 3 the pump 36 may be of the centrifugal type.

.While we have described our invention as relating steam, it will be understood that it is not limited thereto necessarily but may be used to generate any other vapor.

In accordance with the provisions of the patent statutes, we have described the principle of operation of ourinvention together withthe apparatus which we now consider to represent the best embodiment thereof, but

we desire to have it understood that the appa- 40. ratus shown is only illustrative and that the invention may be carried out by other means. What we claim as new and desire to secure by Letters Patent of the United States is:

1. In a vapor generating plant, the combination of a boiler drum, a pump for supplying liquid thereto, a superheater, conduit 7 means for conveying vapor from the drum to the superheater and from the superheater to means, and an auxiliary I vapor supply of higher pressure "for supplying vapor to said 7 jet apparatus.

2. Ina vapor generating plant, the combination of a boiler drum, a pump for supplymg l1qu1d thereto, a superheater, conduit means for conveying vapor from the drum to the superheater and from the superheater to the drum, a jet apparatus in said conduit g means, and1an'auxiliary vapor supplylof higher pressure for supplying vapor to said .jet apparatus, said auxiliary vapor. supply comprlsmg a superheater, a feed pump for supplying liquid to the superheater, a jet apparatus arranged between the pump and the especially to plants for generating the drum, a jet apparatus in said conduit this 11th day of April, 1929. WALDEMAR PETERSEN.

RICHARD TnoeEn. 

